A switchback is when the road doubles back on itself, also called a hairpin turn. In France, they are called lacets (pronounced “la-say”), which means shoelaces. You can see how apropos that visual is when looking at Alpe d'Huez or the Lacets de Montvernier (photo below).

What are jumps in spin class?

Jump: A type of drill used in an indoor spin? class. You start in your saddle and when the instructor says jump, you pedal off your saddle. Usually the instructor will do jumps to the beat of the music.

What is output on a spin bike?

The “Output” calculation indicates how hard you're working at the moment. It's computed based on your cadence and your resistance (described below) and is measured in watts. Output is a measure of power, not work. Those two things may sound like the same thing, but they're definitely not.